RIFAXIMIN POWDER, METHOD OF ITS PREPARATION AND COMPOSITION OF CONTROLLED RELEASE COMPRISING THE SAID RIFAXIMIN USEFUL FOR LONG-LASTING EFFECT OBTAINING.

摘要

The present invention describes rifaximin powder and lo a process for preparing the same. The invention relates also to a pharmaceutical composition in solid form comprising said rifaximin, pharmaceutically acceptable excipients and optionally other ingredients. The compositions according to the invention are suitable for oral administration and are characterized by producing a controlled release of rifaximin, whereby a long-lasting effect is obtained in a patient.